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김종윤,김학진,길태준,김재영,김형준,차인호,남웅,Kim, Jong-Yun,Kim, Hak-Jin,Kil, Tae-Jun,Kim, Jae-Young,Kim, Hyung-Jun,Cha, In-Ho,Nam, Woong 대한악안면성형재건외과학회 2010 Maxillofacial Plastic Reconstructive Surgery Vol.32 No.2
Osteoblastoma is a rare tumor of bone representing less than 1% of all tumors of the maxillofacial region. This is a neoplasm of bone characterized by a proliferation of osteoblasts forming bone trabeculae. Because the clinical feature of benign osteoblastoma is nonspecific and osteoblastoma has a pleomorphic histologic appearance, the differential diagnosis is difficult problem. We studies the case records 3 new patients with osteoblastoma. We discussed the case from clinical, radiologic, and histologic feature for differential diagnosis. Three cases from our clinic is reported and analized with previously described cases.
김종윤,김기정,박세준,김철수,배장근,김정우,김수중,Kim, Jong-Yun,Kim, Gi-Jeong,Park, Se-Jun,Kim, Cheol-Su,Bae, Jang-Geun,Kim, Jeong-U,Kim, Su-Jung 대한전자공학회 2001 電子工學會論文誌-SD (Semiconductor and devices) Vol.38 No.1
In this paper, we propose a new optical security technique using two phase masks based on interferometer. A binary random phase image is used as a reference image and the encrypted image is generated according to the phase difference between the reference image and the original image. If there is no phase difference of a same pixel position in two phase masks, interference intensity of the pixel has minimum value and if phase difference of a same pixel position in two phase masks is $\pi$, its interference intensity has maximum value. We can decrypt the original image by putting two phase masks on each of the two optical paths of the Mach-Zehnder interferometer. Computer simulation and the optical experiments show a good performance of the proposed optical security system. 본 논문에서는 컴퓨터와 리소그라피를 이용하여 암호화된 두 개의 위상카드를 제작하고, 마흐-젠더 간섭계를 이용하여 암호화된 이진영상을 복호화하는 방법을 제안하였다. 이때 두 위상카드 중 하나는 기준 영상으로 사용되고 다른 하나는 암호 영상으로 사용된다. 하나의 랜덤 위상 카드를 기준 영상으로 두고 암호화하고자 하는 영상에 맞게 빛의 간섭 현상을 이용하여 암호 영상으로 사용될 위상 카드를 제작하였다. 원 영상의 복원은 경로차가 같도록 구성한 마흐-젠더 간섭계의 두 경로에 기준 영상과 암호 영상을 위치시켜 간섭시킴으로써 영상을 복원할 수 있다. 위상 카드는 광세기 검출기로 볼 수 없을 뿐만 아니라 복제할 수도 없어서 개인 정보보호 및 인증시스템에 매우 유용하게 사용될 수 있다. 간단한 영상에 대한 광실험을 통하여 제안한 시스템의 타당성을 확인하였다.
김종윤,Kim, Jong-Yun 한국과학기술단체총연합회 2000 과학과 기술 Vol.33 No.8
우리나라의 2000년도 과학기술 경쟁력이 99년보다 6단계 앞선 22위로 올랐다. 우수한 연구집단 등 무한한 잠재력을 갖고 있지만 기업간 기술협력과 산ㆍ학간 기술이전이 미흡하고 과학기술 발전시스템이 취약한 실정이다. 이에 국가는 학ㆍ연프로그램에 대한 지원과 모니터링을 강화하고 정부ㆍ공공부문의 연구개발 투자를 지속적으로 확대해 나가야 하겠다. 과학기술 발전을 위해선 무엇보다 과학기술자가 우대받는 분위기 조성이 급선무이다.
김종윤 ( Kim Jong Yun ),염효숙 ( Yeom Hyo Sug ),김연희 ( Kim Yeon Hui ),김두한 ( Kim Du Han ) 대한피부과학회 2003 대한피부과학회지 Vol.41 No.11
Ecthyma gangrenosum is usually seen in the immunocompromised patients or in the patients with underlying malignancy. Ecthyma gangrenosum is a rapidly progressing skin infection characterized by edema, hemorrhage, bullae and necrosis. We experienced the case of a 13-month-old male who had ecthyma gangrenosum associated with liver absess and renal abscess. The patient initially presented with skin lesions of multiple well defined central necrotic black colored large erythematous bullae. The multiple liver abscess with hepatomegaly and multifocal pyelonephritis with focal renal abscess revealed by abdominal ultrasonogram and computed tomogram. In the bacterial cultures of skin, urine and liver aspiration fluid, Pseudomonas aeniginosa was grown. The patient had no immune deficiency disease. We report this case with a review of related literatures. (Korean J Dermatol 2003;41(11) : 1521-1524)
고객관계관리(CRM)가 서비스품질 및 고객만족에 미치는 영향
김종윤(Jong Yun Kim),최명수(Myung Soo Choi) 한국사회체육학회 2009 한국사회체육학회지 Vol.0 No.37
This study is to present the reason to introduce CRM in sports center and what service quality to emphatically provide the customers after the introduction, and also to present basic materials necessary to maintain customer members and secure the competition by improving the service quality and maximizing customer satisfaction. Study results of demonstrative study are summarized as the following. First, as a result of investigating the effect of sports center`s perceived relational effort on perceived service quality, it was shown that except for service quality`s materiality, it had positive(+) effect on guaranty, reliability, responsiveness. Second, as a result of investigating the effect on sports center`s perceived service quality and customer satisfaction, it was shown that except for the relation between service quality`s materiality and customer satisfaction`s service satisfaction, all had positive(+) effects. Also, to maintain continuous relationship with customers, sports centers must not only deal with the CRM factor in this study but also put in diverse efforts for relationship formation. And in the appearances of many corporative sports centers with enhanced facilities and service, each sports center must continuously enhance service quality to satisfy the customers, which would lead to repetitive purchase.